Following a number of mysterious teasers, Marvel's next big event -- "Secret Empire" -- has been fully unveiled. Revealed via ABC News, Marvel's "Secret Empire" will feature the culmination of Nick Spencer's work on titles like "Captain America: Sam Wilson" and "Captain America: Steve Rogers."

The series, which will run for 9 issues, will begin with issue #0 in April. Issue #1 will arrive in May. The series will be written by Spencer and feature art from Steve McNiven and Andrea Sorrentino. Marvel has also confirmed to CBR that artists Leinil Yu and Daniel Acuna will also be part of "Secret Empire."

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The series will also follow up on the conclusion of "Civil War II," which saw Steve Rogers -- now a covert HYDRA agent thanks to the Red Skull mucking with the Avenger's origin via a Cosmic Cube -- assume command of S.H.I.E.L.D. That's just one aspect of Rogers' plan, as Marvel's Senior Vice President Tom Brevoort told ABC News.

"Steve has been kind of lining his dominoes up around the Marvel Universe to be able to make his move and bring about a Hydra revolution, a takeover," Brevoort said. "At the point of 'Secret Empire,' they are ready to go. That's the moment we hit as we go in." So far HYDRA Cap has been acting in secret, but all of that will change come May's "Secret Empire" #1. Brevoort added that in "Secret Empire," Rogers will be "done with the covert portion, the buildup portion of the program."

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Brevoort added that the event will kick off when "not one, not two, but three separate events break out all at once. Cap, as head of S.H.I.E.L.D., is able to mobilize forces to all three of those situations. And those three situations represent Hydra's first move. It comes off the blocks explosively right from the get-go."

Marvel Editor-in-Chief Axel Alonso said "Secret Empire" is designed to unify the Marvel Universe's heroes, particularly after the divisive "Civil War II" and "Inhumans vs. X-Men."

"We've just come off of 'Civil War II' and 'Inhumans vs. X-Men,' two big, dark events that had heroes fighting against heroes, over somewhat defensible positions," said Alonso. "This is very much more an old school story. You will know who the good guys are and who the bad guys are. This is not heroes fighting heroes, this is heroes fighting a bad guy... We saw this moment as our chance to rally the entire Marvel Universe, which has been fragmented of late."

"Secret Empire" #0 arrives in stores in April, and issue #1 will debut in May. The series will run through the summer, concluding in August.

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"Secret Empire" interior artwork by Andrea Sorrentino